The new suspension eventually proved itself wi the buyin public an in racin, wi three TR4A IRS models postin a team win an finishin 1st, 2nt an 3rd in cless at the Sebring 12-oor race o 1966. Albeit nou the live axle is superior in racin due tae its muckle better pouer tae wecht ratio, an aa bestin the TR6.